Drawing mechanism for spinning fibrous materials



Um. M WMM, v M MM' MM bRAWING MECHANISM FOR SPINNING FIBROME MATERIALS Filed A g. 16, 1.927 2 Sheets-Sheet 1 2. Sheets-Sheet 2 DRAWING MECHANISM FOR SPINNING FIBROU MATERIALS F l d A g 16 1927 atenteel Film W lit MFUHANISM FUF. MPINNING FIFJELOUS MATERTALfi.

application filed August to, rear, Serial Ito. $13,353, and in Germany vli'anuary at, 19%".

The present invention relates toa drawing-mechanism i'or spinning fibrous materials, the mechanism preferably comprising additional bottomand top-rollers which on.

a their working faces are a small distance apart from each other even without the interposition of a sliver or roving. The invention essentially consists therein, that the additional bottom-rollers have been so constructed as to pass through for a more or less great part of the drawing frame so as to act together with a plurality ot top-rollers and are actuated independently from each other, preferably by one of the main bottomrollers.

The single drive of the additional bottomrollers passing through more or less exten sively is preferably efl'ecte'd with the aid of -gear-wheels, chain or the like.

Between the main bottom-roller and the additional bottom-roller a reversing gearwheel, which may be mounted in a special a support or carrier, may be provided, the reversing gear-wheel being preferably adjustllfi able to the gear-wheel ot the actuating or driving main bottom-roller.

' The gear-wheel drive may advantageously be arranged in the interior of a standard, and be rendered dustand dirt-proof by covers of sheet-metal or such like. For the purpose of supporting the gear-wheel drive for the additional bottom-rollers an additional preferably adjustable slide which simultaneously may serve as cover for the bearing-pivots of the intermediate and hindmost main bottom-rollers may be provided and fitted to the standard or carrier within which the drive for the bottom-rollers,is contained.

A constructional example of the subjectmatter of the present invention has been i1 lustrated in the accompanying drawings in which Fig. 1 represents 'a view of a part of a 45 device according to the invention,

Fig. 2 shows a section along the line 2-2 of Fig. 1 on a scale somewhat enlarged,

Fig. 3 is a plan-view of a part of a device in accordance with the present invention.

Referring more particularly to the draw ings 0; represents standards upon each of which a slide 6, which may be clamped in position by a screw c, has been provided. (Z is a further slide attached to the slide 6 with the aid of the screws 7' which also render it possible to adjust the said further slide. This slide carries the pivots of the gear-wheels g, h. Hereby it has been rendered possible to adjust the mesh of the gearwheels aganist each other. The slide at is covered by the metal-sheets 7am whereas the former is made to cover the bearings for the main bottom-roller i appertaining to the gear-wheel i and the main bottom-roller a. For this'purpose it has been provided with gaps 0, p. n represents top-rollers for the main bottom-roller a. By means of the gear-wheel drive 2', g, h the additional bottom-roller 7L1 appertaining to the gearwheel h is actuated. These additional bottom-rollers are of such short length that they are not subjected. to torsion by the eflect of the drive. They are, however, of suflicient length so as to extend across a number of appertaining top-rollers q. Owin to this special drive it has become possib e to give these additional bottom-rollers a very small diameter, so that they may be placed very closely to the delivery-rollers r W.

The additional bottom-rollers k and their top-rollers q have preferably been by dimensioning their working surfaces as set forth in my pending application Ser. No. 37,963 so constructed as to allow the longer fibres to. slip through, so that the creation of a positive pressure, as with the other pairs of main drawingor stretching-cylinders or rollers, is avoided. Owing to the disposition of the gear-wheels g, 71. in a special additional slide 0? it is posslble, to adjust the roller 1? appertaining to the gear-wheeli and the corresponding top roller s to the pair of delivery-rollers 1' 1- without changing the distance-between the additional pair of rollers 71, (7 and the pair of delivery-rollers r W. The additional bottom-roller 77. has been so placed that its upper vertical line is on a higher level than the clamping point between the delivery rollers 1- 1 and the clamping point between the main bottomnot be raised if tensions in slivers or rovings or fibres take place. The working-surfaces of the additional bottom-rollers and their top-rollers are preferably of such design that they are a small distance apart, even if there is no sliver 'or roving between them. Between each two standards a a plurality of toprollers n, s, 1' have been provided,

separated from each other by a bracketblock 2?. In the left and intermediate standards, Fig. 1, a drive hasbeenindicated, Whereas the right standard illustrates the fact, that the additional bottom-rollers h are independent from each other.

Having thus explained the nature of my invention and described a way of making and using same, although without attempting to set forth all of the forms in which it may be made or all of the modes of its use, what I claim is a 1. In a drawing-frame for spinning-machines a plurality of pairs of main drawingrollers in combination with a plurality of additional bottom-rollers which are shorter than the main drawing-rollers and driving means for each said additional bottom roller.

2. In a drawing-frame, according to claim 1, the construetionof the additional, shorter bottom-rollers of such nature that they are suitable to be actuated by one of the bottom-rollers of the pairs of main drawingcylinders.

3. In a drawing-frame according to claim 1, the construction of the additional shorter bottom-rollers of such nature, that they are suitable to be actuated by one of the main bottom rollers of the pair of main drawing-rollers by means of gear-wheels.

4. In a d awing-frame according to claim 1, the addition of a plurality of special toprollers to each of the additional shorter bottom-rollers.

5. In a drawing-frame according to claim 1, the addition of a plurality of special toprollers to each of the additional shorter bottom-rollers which at the working-point are separated by a small distance, even if there is no sliver present between the additional bottom-rollers and their top-rollers.

6. In a drawing-frame according to claim 1, a plurality of gear-wheels on one of the main bottom-rollers, a gear-wheel on each additional bottom-roller and a reversing gear-wheel between each gear-wheel of the main bottom-roller and the gear wheel of the additional bottom-roller.

7. In a drawing-frame according to claim 1, a plurality of gear-wheels on one of the main bottom-rollers, a gear-wheel on each of the additional bottom-rollers, and a reversing gear-wheel, which is relatively adjustable to the gear-wheel of the main bottom-roller, between each gear-wheel of the main bottom-roller and the gear-wheel of the additional bottom-roller.

- 8. A drawing frame for spinning-frames with a plurality of pairs of main drawingrollers in combination with a plurality of additional bottom-rollers each with an independent drive, the said additional bottomrollers being shorter than the main drawingrollers and the standards for carrying the vsaid rollers, a plurality of gear-wheels on one of the main bottom-rollers, a gear-wheel on each of the additional bottom-rollers, and a reversing gear-wheel between each gear-wheel of the main bottom-roller and the gear-wheel of the additional bottomroller, in which connection the said gear- Wheels appertaining to each other have been installed within one of the said standards of the drawing-mechanism or drawing-frame.

9. A drawing-frame for spinning-frames, with a plurality of pairs of main drawingrollers in combination with a plurality of additional bottom-rollers each with independent drive and each being shorter than the main drawing-rollers and the standards for carrying the said rollers, a plurality of gear-wheels on one of the main bottomrollers, a gear-wheel on each of the additional bottom-rollers, a reversing gear-wheel between each gear-wheel of the main bottorn-rollers and the gear-wheel of the additional bottom-rollers, the disposition of the ,said gear-wheels within the said standards or carriers, and a cover which is of a suitable design to protect the gear-wheels from dust.

10. In a drawing-frame for spinningframes according to claim 8, a slide adjustable relatively to the gear-wheel of the main bottom-rollers, the said slide being adapted to form a bearing for said additional bottomrollers and a said reversing gear.

11. In a. drawing-frame for spinningframes according to claim 8, a slide being adjustable to the gear-wheel of the main bottom-roller, of suitable construction to form a bearing ,for one of the additional re-:

versing gear-wheels and provided with a cover of suitable construction to protect the gear-wheels from dust and dirt.

12. In a drawing-frame for spinningframes, according to claim 8, a slide being adjustable to the gear-wheel of the main bottom-roller of suitable construction to form a bearing for an additional bottomroller and a reversing gear-wheel, and

which is thither suihie ho EEOVM the htti 111mg 0f a main hottom-rollller in the standlm'dl.

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